At the D11 conference on Tuesday, Apple CEO Tim Cook explained why Apple doesn't release a host of iPhones with varying features like other major handset makers, saying that the tradeoffs in making multiple devices would outweigh the positives of making one solid device.

Apple CEO Tim Cook said that third-party developers would slowly gain access to iOS application programming interfaces (APIs) in the future, allowing for apps to integrate with higher functions of the iPhone and iPad.

During his interview at the D11 conference, Apple CEO Tim Cook noted that the company's Senior Vice President of Industrial Design Jonathan Ive was key in creating the next generation operating system set to be unveiled at WWDC in June.

Apple Chief Executive Tim Cook unsurprisingly declined to reveal any details about his company's future products at D11 on Tuesday, but he did offer some general comments on the emerging wearable device market.